Ten people were killed and 15 wounded Tuesday when a blast of unknown origin rocked the main tourist hub of Turkey's largest city Istanbul, the governor's office said.
"Investigations into the cause of the explosion, the type of explosion and perpetrator or perpetrators are underway," it said in a statement quoted by the Dogan news agency after the blast in the Sultanahmet neighbourhood.
Turkish authorities suspect a terror attack was the cause of Tuesday's blast in the main tourist hub of Istanbul that left 10 people dead, a government official said.
"Terrorist links are suspected," the officicial told AFP, asking not to be named, after the explosion in the Sultanahmet district of Turkey's biggest city.
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